Appliance for reseating tools



Aug. 18, 1936.

M. SPITZ APPLIANCE FOR RESEATING TOOLS Filed Sept. 50, 1932 2 She'ets-Sheet l Aug. 18, 1936. M, sp 'rz I 2,051,580

APPLIANCE FOR RESEATING TOOLS Filed Sept. 30, 1952 2 Sheets-Sheet 2 I00 po fig, 10 INVEN'TOR I06 m6 v G ATTORNEY Patented Aug. 18, 1936 rotisseeA ENT orrice APPLIANCE Fon' RESEATI-NG TOOLS Morris Spitz, Cleveland Heights," Ohio Application September 30, 1932, Serial No. 635,573

4 Claims.

The improved centering device comprising the present invention is so designed as to receive a valve reseating tool and align the same for operation upon a valve seat. The centering device may be operated with great facility and. may be quickly and easily applied to faucets, ballcocks, and valve casings of various designs-and sizes.

The principal object of the present invention is to'provide a centering device which may be applied to a valve casing and which will accurately align the tool employed for operation upon the valve seat with the valve and which at the same time will permit removal of the tool and the substitution of another tool, if desired, in its stead, without necessitating disassembling of the device or detachment of the same from the valve casing, the device serving to properly align successive operating tools. It is a further object of the invention to provide a centering device which is so constructed as to fit over or onto different sizes of valve casings and which is so constructed as to utilize engagement with the threads usually provided on such .valve casings for proper alignment and maintenance upon the valve casing;

Yet another object of the invention is to pro-' vide an adjustable centering device for valve tools which is not expensive to manufacture, one

which is rugged and durable in its construction, one which is comprised of a minimum number of parts and which consequently is notlikely to get out of order, and one which is well adapted to perform the services required of it.

not at this time more particularly enumerated, will become more readily apparent as the nature of the invention is better understood, and the same consists in the novel construction, combi-- nation, and arrangement of parts shown in the accompanying single sheet of drawings in which Fig. l is a side elevation of the improved centering device showing the same applied to a valve casing in the form of an ordinary water spigot;

Fig. 2 is a fragmentary side elevation partly in section showing the centering device applied to a water spigot and showing a combination valve.

seat reaming tool and tap centered in position upon the seat;

Fig. 3 is a top plan view .of the improved centering device;

Fig. 4 is a bottom plan view of a retaining unit employed in connection with the presentinvem tion;

Other objects and advantages of the invention,-

Fig. 5is a bottom plan view of the centering device;

Fig. 6 is a side elevation of a retaining unit employed in connection with the present invention;

Fig. '7 is a fragmentary sectional view of a 5 modified form of the invention;

Fig. 8 is a fragmentary sectional view similar to Fig.7 showing a still further modified form of the invention;

Fig. 9is a vertical sectional view taken through 10' a modified form of centering device; and

Fig. 10 is a side elevation of an expanding springemployed in connection with the present invention.

Fig; 11 is a fragmentary view and represents a section taken substantially along the line ll-I l of Fig. 8.

Fig, 12 is a side elevation ofa threaded nipple employed in connection with the present invention., I

In all of the above described views like characters of reference are employed to designate like parts throughout.

Referring now more specifically to the drawings, a valve casing is designated at H). By way 25 of example-,this casing is illustrated in the form of a water spigot having a body l2, externally threaded as at l4, and having an inlet I6 communicating through a valve seat l8 with an outlet in the form of a spout. Such casings are commonly employed in the art and no claim is made as to any novelty existing in connection with this. casing, the novelty of this application residing rather in'theimproved centering device which will now be more fully described.

Designated at 22 is a ring member formed of a suitable metal. Secured to this ring member and depending from the underneath side thereof are a plurality of gripping or clamping elements designated successivelyat' 24, 26, 28 and. 30. These elements may be. secured to the ring member 22 by means of apertures25 formed at spaced points through the ring member 22, through which apertures the ends of the clamping members extend as at 3| and in which the reduced portions of the clamping members may be loosely riveted. The clamping members 24, 26, 28 and will thus possess a limited freedom of movement so as to swing inwardly or outwardly toward and away from a central axis.

In order to guide the clamping arms 24, 26, 28 andtfiin their swinging movement,. a plurality of brackets 23 are secured to the underneath side of thesupport 22. These brackets straddle the member 32.

clamping arms and prevent dislocation or undesired swinging movement of the arms.

In Fig. 8 another contemplated means for guiding the arms in their swinging movement is shown. In this form of the invention the ring member 86 is formed of comparatively thick material and the clamping arms, which are designated collectively at 82, are provided with reduced portions 84 that are loosely riveted through bores 86 in the ring member. By virtue of the materially greater thickness of. the ring member 86, in this form of the invention, such a construction eliminates the necessity of employing the brackets 23 shown in Fig. 1.

In Fig. 7 a modified form of ring member together with its attached clamping members is shown. In this figure the ring is shown at 32 and may be formed of light, flexible steel. The clampin members designated collectively at 34 are firmly secured to the ring 32, as, for example, by spot-welding or by means of rivets 36. Limited movement of the clamping members 34 toward and away from a central axis may be effected by virtue of the resiliency of. the ring Irrespective, however, of whether the ring member shown in Fig. 2 or the ring member shown in Fig. '7 be employed, the essential features of the invention are not destroyed.

The clamping arms shown in Figs.'2 and 7 are preferably formed of a suitable metal, which may be hardened steel. The lower ends of these arms are enlarged as at 40. Each of the arms is provided with an inwardly extending flange 42, which flanges provide an interrupted seat adapted to bear against the upper edge of the valve casing it). The portions of the arms beneath the flanges 42 are threaded as at 44 and these threaded portions are adapted to engage the threaded portion M of the casing II], should such threads be provided on the casing, when the arms are swung inwardly toward a vertical axis.

The outer surfaces'of. the arms 24, 26, 28 and 36 are provided with threads 46, which threads collectively provide interrupted threaded areas. A ring member 48 interiorly threaded as at 50 is received over the interrupted threads 46. The threads 46 progressively increase in diameter from top to bottom and thus it will be seen that as the ring member 48 is turned with respect to the arms carrying the threads 46, these arms will be forced inwardly toward each other in such a manner that the valve casing in will be securely clamped by the lower ends of these arms. The flanges 42 are first caused to rest upon the upper edge of the valve casing to secure initial alignment of the centering device. Upon turning of the ring member 48 the lower ends of the arms close upon the valve casing while at the same time the flanges 42 preserve the proper axial displacement of the supporting ring 22 with respect to the valve seat. In order to facilitate turning of the ring 48 a plurality of ears designated at 52 may be provided on this member and these ears serve as finger grips to facilitate turning movement of the ring.

In order to expand the clamping arms 24, 26, 28 and 36 and to prevent removal of. the ring member 48 from the assembly and insure against loss of the same in the event of removal, an expanding retaining unit best illustrated in Fig. 6 is provided. This unit is in the form of a ring 60 having outwardly projecting fingers 62 at its top and bottom. The fingers 62 are arranged in pairs and are adapted to straddle the ring member 48 in such a manner that the retaining unit 60 is loosely applied to the ring member and will travel axially of the assembly riding upon the ring member 48 as the same turns. The inwardly extending flanges 42 will thus serve as abutments for the retaining unit 60 when the ring member 48 has reached its bottommost position on the threads 46. Obviously, removal of the ring member 48 at the other end of the threads 46 is precluded by virtue of the attachment of the arms 24, 26, 28 and 36 to the ring-like supportingmember 20.

The retaining unit 60, in addition to preventing removal of the ring member 48 from the assembly, serves to expand the clamping arms 24, 26, 28 and 38 as the same ride upwardly with the ring member 48 as the latter turns. The inner surface of. the retaining unit 60 bears against the inner surfaces of the arms 24, 26, 28 and 30 and serves at all times to maintain the threaded portions of these arms in engagement with the internal threads 58 on the ring member 48.

The member 22 is provided with a central opening adapted to receive therethrough the operative portion and shank of an operating tool. In Fig. 2, which is partly diagrammatic in its representation, there is disclosed a tool in the form of a reamer 64 having an operative portion 66 and a shank 68. Included in the operative portion 66 of the tool is a cutting portion 61 designed to cut a shoulder in the valve seat. After operation on the valve seat by this tool a threading tool designated in its entirety at H may be employed to form threads in the seat for insertion of a removable seated nipple such as is shown in Fig. 12 at 13. One end of the tool ll may be provided with a tool 15 for insertion of. the nipple 13. The manner in which this tool is applied to the nipple is clearly shown in Fig. 12. Such tools and many other tools of a similar nature are provided with a shank which is smaller in cross section than the operative portion of the tool. For this reason it has been necessary with many of the centering devices upon the market to disassemble the centering device before a change of tools maybe conveniently efiected. In the present instance the opening 60 is of sufiicient size to permit both the enlarged operative portion of the tool, whatever its nature may be,'and the shank to be freely passed through the opening. In order to center the tool a guiding sleeve 65 is provided. This sleeve is provided with a flange 69 adapted to overlie the ring support 22. The periphery of the flange 68 is turned downwardly and a plurality of pins 16 are formed on the underneath surface cated at spaced points around the ring-like member 22. It will be seen, therefore, that the sleeve 65 may readily be removed from the assembly and when the same is. applied to the body portion 22 of the casing accurate alignment of the tool will at all times be efiected.

Referring now to Figs. 9 and 10 wherein a still further modified form of the device is' shown, a ring member is designated at 88. This ring member corresponds in its function to the ring member 22 in the other form of the invention. The

clamping arms are designated at and correspond in their function to the clamping arms 24, 26, 28 and 36 shown in Fig. 1. The outer surfaces of the arms 90 are threaded as at 92 to provide interrupted threaded areas adapted-to be engaged by a ring member 94 which is threaded interiorly. The ring member 88 is provided withapertures 96 therethrough and the upper ends of the arms 90 extend through these aperatures and are beaded or flanged outwardly to form a pivotal connection with the arms 90 and the ring member 88, thus permitting limited swinging movement of the arms inwardly toward a vertical axis. This flanging of the upper ends of the arms 90 provides a still further modified form of attachment for the arms.

In this form of the invention the expanding and retaining unit has been dispensed with and in its stead there is provided the expanding unit shown most clearly in Fig. 10. This expanding unit is in the form of a light spring steel member comprised of a top 98 and integrally formed pyramidal arms I00. In this instance four of such arms have been shown, corresponding in number to the number of clamping arms 90. The lower ends of the clamping arms are provided with inwardly extending pins I04 and the lower ends of the arms I00 are notched as at I08 to fit over the pins I04 and maintain the portion 98 of the spring unit in position against the underneath side of the ring 88. The arms I00 have a tendency to flex outwardly, thus carrying the arms 90 with them to maintain engagement of the threaded portion 92 of the arms 90 inengagement with the threaded portion of the ring 94. This modification of the invention in all other respects is similar to the modification shown in Fig. 1.

While the improved centering device has been described in connection with a valve casing of the water spigot type, it is to be distinctly understood that the centering device is capable of use with other forms of casings. The centering device, as will be understood from the above description, is capable of engagement with the threaded portion of various sizes of casings. Where no external threads are provided, as is the case with certain types of casings, the threads provided on the lower ends of the clamping arms will engage the unthreaded portion of the casing and effect their clamping action notwithstanding. Furthermore, the improved centering device is capable of use with various types of tools, regardless of whether these tools be reamers, grinders, polishers, threaders. It will be seen, therefore, that rapid change of tools may be effected without disassembly of the unit.

I claim:

1. A centering device comprising a support having secured thereto a plurality of clamping arms, said arms possessing limited freedom of movement whereby they may be swung inwardly toward a vertical axis and whereby said support may be clamped upon a valve casing, the outer surfaces of said arms presenting interrupted threads of progressively increasing diameters, an internally threaded ring member having threaded engagement with said interrupted threads and adapted upon turning movement in one direction to progress along said arms and cause said arms to move inwardly and clamp upon the valve casing, and means in the form of a follower having projections engaging with and being adapted to travel axially with said ring member and adapted to bear against the inner surfaces of said arms to spread the same on turning of the ring member in the opposite direction.

2. In a device of the class described, a support, a plurality of clamping arms each having one end pivotally secured to said support, the arms being movable towards and away from a vertical axis, the outer faces of said arms presenting interrupted threads of progressively increasing diameter toward one end thereof, an internally threaded ring member having threaded engagement with the interrupted threads on the arms and adapted on turning movement in one direction to progress along said arms and cause the free ends of said arms to move inwardly to clamp said arms on a valve casing, and a follower having a portion located inwardly of the arms and engageable with the inner faces thereof and having portions engageable with the internally threaded ring. member whereby the follower is movable with a ring member.

3. In a device of the class described, a support, a plurality of clamping arms each having one end pivotally secured to said support, the arms being movable towards and away from a vertical axis, the outer faces of said arms presenting interrupted threads of progressively increasing diameter toward one end thereof, an internally threaded ring member having threaded engagement with the interrupted threads on the arms and adapted on turning movement in one direction to progress along said arms and cause the free ends of said arms to move inwardly to clamp said arms on a valve casing, and a follower having a portion located inwardly of the arms and engageable with the inner faces thereof and having portions engageable with the internally threaded ring member whereby the follower is movable with the ring member, the follower being operable to move the arms outwardly on movement of the ring member toward the threaded portion of smaller diameter.

4. In a device of the class described, a support, a plurality of clamping arms each having one end pivotally secured to said support, the arms being movable towards and away from a vertical axis, the. free end of each of said arms having on the inner face thereof an inwardly extending projecting portion, the outer faces of said arms presenting interrupted threads of progressively increasing diameter toward one end thereof, an internally threaded ring member having threaded engagement with the interrupted threads on the arms and adapted on turning movement in one direction to progress along said arms and cause the free ends of said arms to move inwardly to clamp said arms on a valve casing, and a follower having a portion located inwardly of the arms and engageable with the inner faces thereof and having portions engageable with the internally threaded ring member whereby the follower is movable with the ring member, the follower being engageable with the inwardly projecting portions at the free ends of the arms to prevent removal of said ring member from said arms.

MORRIS SPITZ. 

